Sewing-machine guide for hook tape



Dec. 23, 1930. n. SILBERMAIQ SEWING MACHINE GUIDE FOR HOOK TAPE Filed May 1, 1929 QSheets-Sheet 1 INVENTOR A'ITORNEY BYWS IMjM.

3 D.'SILBERMAN 1,786,174

SEWING MACHINE GUIDELFOR HOOK TAPE Filed May 1, 1929 2 Sheets$heet 2 INVENTOR ATTORNEY Patented Dec. 23, 1930 DAVID SILBERMAN, OF NEW YORK, N. Y.

SEWING-MACHINE GUIDE FOR HOOK TAPE Application filed May 1, 1929. Serial No. 359,438.

My invention relates to attachments to be placed on sewing machines which will adapt them to sew hook tape to garments and it is my object to produce a device which can be attached to any two needle sewing machine so that lines of stitching extend along both edges of the hook tape and secure it to the garment. Heretofore some trouble has been experienced in passing the hooks with their bills between the presser foot and the feed dog of the sewing machine and grooves have been made in the feed table at the sewing point to enable the hooks to pass under the needles. This meant a separate channeled plate for each size of tape to be sewed. I have constructed my attachment in such a way that no such groove is employed at the sewing point and in which the hooks are guided along a knife edge or tongue on which they ride above the table proper during the sewing operation and at the same time the hooks are pushed into final position in tape of the style shown in the pending application of David Silberman, Ser. No. 170,244, filed February 23, 1927.

In the drawing Fig. 1 is a top view of my improved hook tape feeding device, partly broken away for clearness of illustration; Fig. 2 a top view of the tongue or knife edge on which the bills of the hooks ride while passing under the needles; Fig. 3 a side view of the structure of Fig. 2; Fig. 4: a sectional view of the structure of Fig. 1 on the line 14t thereof; Fig. 5 a sectional view of the structure of Fig. 1 on the line 5-5 thereof Fig. 6 a side view of the attachment and Fig.

7 a plan view of the flexible plate which forces the hooks into final position in the folds of the tape.

The device consists of a plate 1 tobe secured to the table of a common two-needle sewing machine. A folder 2 of the ordinary type is secured to the plate at its forward end, adjacent the needles to turn the raw edge of the garment over when the tape is sewed to it so that it will present a finished, hemmed edge.

Any suitable method of guiding the hook tape up to the feeding device may be used and forms no part of present invention which relates entirely to the mechanism at the sewing point. This comprises a flexible metal hook tongue 3 secured to, and above the plate 1 and projecting rearwardly as a narrowed tongue with its outer end 4 secured to the apertured block 5 through which the ordinary sewing machine feeddog 6 operates. As will be seen in Fig. 4 the feed dog is double, one part lying on each side of-the narrow part of the hook tongue 3 and each side provided with a needle hole.

Secured to the plate 1 but above and partly overlying the hook tongue 3' is a second, cooperating tongue 9 which is adapted to bear against the bases of the hook bills and force J them into the folds of the tape and against the hook tongue. A third, flexible hold down plate 10 is mounted on the free end of the rigid plate 11 which may swing on the axis 12 and is clamped down by a thumb bolt 13.

This hold down plate lies over the tongues 3 and 9 but stops at the end of the tongue 9, the narrowed part of the tongue 3 continuing beyond it, and at the edge of the feed dog openings in the block 5. Thetongues 3 and 9 have the screw holes through which they are'secured to the plate 1 in the form of slots to permit of fine adjustments for variations in the size of tape sewed.

The hook tape is fed under the flexible plate 10 with the bills down and riding over the edge of the flexible tongue 3 and its narrowed part 7. The tongue 9 lies below the tape and to the rear of the bill bases of the hooks and serves to push the hooks into final position in the tape folds and against the hook tongue before sewing, while the flexible hold down plate 10 holds the tape and hooks downward on their carriers with a yielding pressure.

The regular presser foot 14 of the sewing machine, above the tape, and the regular feed dog 6, below the tape, at the sewing point, feed the tape and garment under the needles in the usual manner. While the tape is being fed under the needles the garment edge is passing through the folder 2 and meets the tape under the presser foot at the needles so that the two are sewed together by lines of stitching at each edge of the tape while the sewing machine is in operation.

In this way a cheap, simple and smoothly operating device is produced which can be attached to any sewing machine provided with two needles and adapt it to sewing hook tape to garments.

I claim 1. A sewing machine guiding device for hook tape comprising a thin tongue over which the hook bills are adapted to ride to the sewing point and extending past the sewing point and a second, co-operating tongue above and partly overlying the hook tongue 1 adapted to engage the rear ends of the hook bills to force them against the hook tongue.

2. A sewing machine guide for hook tape comprising a thin tongue over which hook bills are adapted to ride to the sewing point and extending past the sewing point, a second co-operating tongue above and partly overlying the hook tongue adapted to engage the rear ends of the hook bills to force them against the hook tongue and a hold down 7 plate overlying the tongues adapted to bear upon the tape.

3. A sewing machine guide for hook tape comprising a thin tongue over which the hook bills are adapted to ride to the sewing point, said tongue being narrowed at the sewing point to clear the sewing machine feed dog, a second, co-operating tongue above and partly overlying the hook tongue adapted to engage the rear end-s of hook bills to force them against the hook tongue, said second tongue terminating at the narrowed portion of the hook tongue and a hold down plate overlying the tongues and terminating at the end of the second tongue.

In testimony whereof I have atfixed my signature.

DAVID SILBERMAN. 

